|Publication number||US7414595 B1|
|Application number||US 10/730,422|
|Publication date||Aug 19, 2008|
|Filing date||Dec 7, 2003|
|Priority date||Dec 7, 2003|
|Publication number||10730422, 730422, US 7414595 B1, US 7414595B1, US-B1-7414595, US7414595 B1, US7414595B1|
|Inventors||Ronald J. Muffler|
|Original Assignee||Advanced Simulation Displays Co.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (74), Referenced by (39), Classifications (13), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1. Field of the Invention
This invention relates to visual display systems. More specifically, this invention relates to visual display systems, which provide a large field of view for accurately viewing a computer generated environment.
2. Description of Related Art
Many simulation applications, such as aircraft pilot training ground vehicle driver training and entertainment, require or are enhanced by a very large field of view visual display system that will allow the user to accurately view the surrounding environment. Not only does a typical user need to see directly ahead, but often is required to view imagery to either side and in some applications a user is also required to see behind, above and/or below the user's position in the simulator. Also, for many training or entertainment tasks, it is important to provide the capability of high resolution in the visual display system.
When it is desirable to provide a large field of view display system with high resolution than is typically achievable with a single conventional video display device it is often necessary to mosaic or tile images from multiple video sources. It is possible to place adjacent video display devices together to increase the size of the viewable image and consequently the size of the field of view. The problem with this approach is that all known display devices inherently have physical packaging that extends beyond the boundary of the usable display surface. Therefore, whenever two or more of these display devices are abutted together there will always be a gap between the adjacent displays that prevents the user from viewing an uninterrupted continuous displayed scene.
A wide variety of display systems adapted for use with computer-generated imagery are well known in the art. Prior techniques include optically overlapping projected imagery from multiple projectors, which project onto a flat screen or a spherical projection screen, and rear projection onto a set of translucent projection screens that are arranged around the observer in an abutted fashion to provide a continuous scene with gaps between the screens.
Although not necessarily “prior art”, the reader is referred to the following U.S. patent documents for general background material. Each of these patents is hereby incorporated by reference in its entirety for the material contained therein.
U.S. Pat. No. 4,003,080 describes a large screen display system for video modulated collimated light.
U.S. Pat. No. 4,536,061 describes a display effected by utilizing bubbles formed in a liquid layer by heat.
U.S. Pat. No. 4,653,862 describes a multi-color liquid crystal display that includes liquid crystal micro-shutters, which open and close color filters arranged as dots in a mosaic or stripe pattern.
U.S. Pat. No. 4,791,417 describes a two-dimensional display panel composed of interchangeable unit modules.
U.S. Pat. No. 4,799,050 describes a liquid crystal display that provides a high quality color image and efficient energy utilization.
U.S. Pat. No. 4,917,465 describes a display system formed by stacking three STN birefringent LCD panels that are tuned to different subtractive primary colors.
U.S. Pat. No. 4,931,787 describes a matrix display system that includes an active matrix display device.
U.S. Pat. No. 4,966,441 describes a color display system that includes two colored LCD panels operated in conjunction with a colored filter.
U.S. Pat. No. 5,012,274 describes an active matrix LCD light valve between crossed polarizers.
U.S. Pat. No. 5,019,808 describes a liquid crystal display that provides high quality color image and efficient energy utilization.
U.S. Pat. No. 5,046,827 describes an optical reconstruction filter in the form of a phase diffraction grating.
U.S. Pat. No. 5,050,965 describes a color display formed by staking two or more birefringent elements that are tuned to provide different spectral characteristics.
U.S. Pat. No. 5,101,279 describes a display apparatus that has a display device such as a liquid crystal display device having a plurality of optical-switching portions.
U.S. Pat. No. 5,124,818 describes an LCD display system formed by stacking two or more independently operated LCD elements.
U.S. Pat. No. 5,130,794 describes a panoramic image based virtual reality display system.
U.S. Pat. No. 5,132,839 describes a display video apparatus which provides a three dimensional image.
U.S. Pat. No. 5,157,503 describes a near-infinity image display system.
U.S. Pat. No. 5,241,389 describes a video display system which compensates for video processing delays in multiple, inter-coupled video processing subsystems.
U.S. Pat. No. 5,300,942 describes a light valve such as an active matrix LCD between crossed polarizers.
U.S. Pat. No. 5,337,068 describes a backlighted color LCD display formed by placing a single matrix of liquid crystal devices over a bank of red, green and blue fluorescent lamps.
U.S. Pat. No. 5,381,187 describes an image display apparatus, which includes: an optical system; a display means; and at least one projection lens.
U.S. Pat. No. 5,386,253 describes a projection system of the kind in which beams of light are projected by a projector onto a screen and the beams are modulated by electronic video information.
U.S. Pat. No. 5,436,635 describes a display device that uses pixel electrodes and thin film transistors arranged in a matrix.
U.S. Pat. Nos. 5,504,597 and 5,504,598 describes full color displays having a high efficiency light source optically coupled by a light coupling lens array to the active matrix of pixel elements of an image forming means.
U.S. Pat. No. 5,555,035 describes a projection apparatus comprising a high-resolution projection display system.
U.S. Pat. No. 5,565,742 describes an electronic fluorescent display with spacer elements used to provide rigid mechanical support between the face and back plates.
U.S. Pat. No. 5,583,669 describes a light valve apparatus.
U.S. Pat. No. 5,602,679 describes a light valve such as an active matrix LCD.
U.S. Pat. No. 5,621,284 describes a cathodoluminescent device that employs elongated grid electrodes for addressing and controlling the brightness of the display.
U.S. Pat. No. 5,649,032 describes a system for automatically generating a mosaic from a plurality of input images.
U.S. Pat. No. 5,664,158 describes a video display engineering and optimizing CAD simulation system for designing a LCD display.
U.S. Pat. No. 5,668,435 describes a color display system that includes a color cathode ray tube.
U.S. Pat. No. 5,673,091 describes a liquid crystal display device consisting of a system of pixel elements.
U.S. Pat. No. 5,689,283 describes a display, which increases the apparent resolution of an image displayed on an image display system.
U.S. Pat. No. 5,689,315 describes a light valve apparatus.
U.S. Pat. No. 5,701,445 describes an apparatus for generating pictures that comprises a memory device, an address generator, a vertical position detector, a register, a horizontal position counter, a processor and a state machine.
U.S. Pat. No. 5,703,621 describes an array of light control units that has an area large enough to present images for direct viewing.
U.S. Pat. No. 5,715,022 describes an image display apparatus, which includes: an optical system; a display means, and at least one projection lens for projecting the display image.
U.S. Pat. No. 5,721,585 describes a system performing capture and display of both still and real-time motion picture panoramic images.
U.S. Pat. No. 5,726,719 describes a projection-type color display device.
U.S. Pat. No. 5,760,755 describes a reflective deformable conductor in an electrostatic light valve system.
U.S. Pat. No. 5,760,850 describes a projection type color image display apparatus.
U.S. Pat. No. 5,831,701 describes a liquid crystal display device comprising a black mask formed on one of a pair of substrates at least one of which is transparent, a group of electrodes, a liquid crystal layer, an orientation control film, and a driver.
U.S. Pat. No. 5,847,784 describes a self-adjusting tiled image display system and method.
U.S. Pat. No. 5,900,982 describes a light valve projection system.
U.S. Pat. Nos. 5,969,711 and 5,751,390 describe transmissive, backlit color twisted-nematic or super-twisted-nematic liquid crystal displays.
U.S. Pat. No. 5,969,832 describes a projection image display device that includes a light source, an image display panel, an optical system, a projector, and a color changer.
U.S. Pat. No. 5,971,546 describes an image display device that includes a light source, a flat display panel, and at least one double refraction plate.
U.S. Pat. No. 5,986,622 describes a panel display system having at least one source device coupled to a plurality of interconnected display units.
U.S. Pat. No. 5,991,444 describes a system for automatically generating a mosaic from a plurality of input images.
U.S. Pat. No. 6,040,887 describes a liquid crystal display device comprising a black mask; a group of electrodes; a liquid crystal layer; an orientation control film; a polarizer, and a driver.
U.S. Pat. No. Re. 36,654 describes a color display that is formed by stacking two or more birefringent elements that are tuned to provide different spectral characteristics, and operating each of the elements independently.
U.S. Pat. No. 6,075,504 describes a high brightness presentation display system.
U.S. Pat. No. 6,078,371 describes a micro lens-equipped liquid crystal device capable of ensuring a high picture quality.
U.S. Pat. No. 6,128,054 describes an apparatus for displaying an image that has a display area, which comprises a plurality of displays such as LCDs or CRTs, each displaying a given part of the display area in a side-by-side arrangement facing in the same direction with gaps between them.
U.S. Pat. No. 6,157,420 describes a projection-type display apparatus that includes a light source; a color separating/synthesizing device; and three reflection-type display devices.
U.S. Pat. No. 6,163,349 describes a micro lens array provided on a light-outgoing side of a monochromic LCD element.
U.S. Pat. No. 6,195,184 B1 describes a real-time, dynamic, free space-virtual reality 3-D image display system.
U.S. Pat. No. 6,252,564 B1 describes a process for creating an electronically addressable display.
U.S. Pat. No. 6,266,037 B1 describes a wafer based active matrix reflective light encoding system.
U.S. Pat. No. 6,266,113 B1 describes a reflection type liquid crystal display device.
U.S. Pat. No. 6,330,112 B1 describes an optical modulator and image projection display apparatus.
U.S. Pat. No. 6,332,684 B1 describes a projection type color image display apparatus that includes: a light source section, a first and second fly-eye lens array; a micro lens array; a single image display device; a color separator; and a projection lens.
U.S. Pat. No. 6,346,928 B1 describes a method of presenting a complete image on the retina of an observer.
U.S. Pat. No. 6,351,335 B1 describes a foveated display.
U.S. Pat. No. 6,356,332 B1 describes a matrix substrate that includes a plurality of conductive members constituting pixels provided on a substrate.
U.S. Pat. No. 6,393,163 B1 describes a system for automatically generating a mosaic from a plurality of input images.
It is desirable to provide a large field-of-view display system for use in the display of a simulated and/or computer generated scene. It is particularly desirable to provide a large field-of-view display system that provides a high-resolution image in a mosaic display.
Accordingly, it is an object of this invention to provide a high-resolution large field-of-view display system.
Another object of this invention is to provide a high-resolution large field-of-view display system that is a mosaic display system.
A further object of this invention is to provide a high-resolution large field-of-view mosaic display system that avoids gaps caused by display packaging.
A still further object of this invention is to provide a high-resolution large field-of-view mosaic display system that avoids discontinuities at channel boundaries.
It is another object of this invention to provide a high-resolution large field-of-view mosaic display system that employs a plurality of real and virtual image displays.
It is a still further object of this invention to provide a high-resolution large field-of-view mosaic display system that combines multiple display devices.
Another object of this invention is to provide a high-resolution large field-of-view mosaic display system that combines real and virtual display devices.
A further object of this invention is to provide a high-resolution large field-of-view mosaic display system that is compatible with real-time computer image generation devices.
A still further object of this invention is to provide a high-resolution large field-of-view mosaic display system that is compatible with simulation devices.
Additional objects, advantages and other novel features of this invention will be set forth in part in the description that follows and in part will be apparent to those skilled in the art upon examination of the following or may be learned with the practice of the invention. The objects and advantages of this invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims. Still other objects of the present invention will become readily apparent to those skilled in the art from the following description wherein there is shown and described present preferred embodiments of the invention, simply by way of illustration of the best modes currently known to carry out this invention. As it will be realized, this invention is capable of other different embodiments, and its several details, and specific components, dimensions and materials, are capable of modification in various aspects without departing from the invention. Accordingly, the drawings and descriptions should be regarded as illustrative in nature and not as restrictive.
The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present invention. Some, although not all, alternative embodiments are described in the following description.
In the drawings:
Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.
This invention is a wide field-of-view display system that is specifically adapted for use in simulation and training systems. Because it is often desirable to provide a very large field of view visual display system that will allow the trainee or user to see the surrounding simulated environment not only directly ahead, but also, in selected applications, to the side, above, below and even behind the trainee/user. The construction of large field-of-view displays that maintain high resolution is achieved by mosaicing or “tiling” image displays from multiple video sources. Traditional techniques for tiling multiple image displays next to each other have been limited because of the physical packaging of each image display, which extends beyond the useable display surface and thereby creating a gap or discontinuity between adjacent displays. This invention addresses this problem along with the edge overlap visual artifacts caused in overlapping display channel systems, such as multiple projectors. This invention provides novel and low-cost solutions to problems encountered in previous attempts to provide high-resolution wide field-of-view display systems. In alternative embodiments, the display channels are butt matched to each other, avoiding overlap of the images from the display channels. This invention provides a mosaic display that includes a plurality of alternating real and virtual images that, depending on the particular application, are either abutted or overlapped and are either electronically or optically blended. The system of the present embodiment of this invention includes: an image display device, a combiner/beamsplitter, a mechanical mounting structure, contrast enhancing light baffles and a light tight enclosure. The present combiner/beamsplitter is constructed from a glass, acrylic, polycarbonate substrate or like material molded or cut into the desired curved shape to ensure good transmissive and reflective properties appropriate for the specific devices and field of view of the combined channels.
In alternative embodiments, addition or fewer display devices may be mount to or about the simulation cockpit as required by the training task. As noted above, the display devices 103 a,b, 104 a-f, 105 a,b, 106 a,b, 108 a,b and 109 a,b are fixed to one or more support frame(s). In this embodiment the support frame used consists of aluminum structural assemblies that rigidly form the multiple plasma panels together in a fixed geometric relationship. Each multi-channel unit (103 a, 103 b, 106 a, 106 b) typically includes its own structural assembly to provide the desired rigidness for use on a simulator motion base. As noted in more detail below, the present preferred mounting structure of the beamsplitter to the typically aluminum support structure is a honeycomb structure provided as a backing plate with precision spacers between the honeycomb structure and each beamsplitter/combiner or the display devices. This support and mounting technique provides an accurate, lightweight and rigid mount for the beamsplitter in the portions of the beamsplitter that operate in the reflective mode. In the areas where the beamsplitter operates in a transmissive mode it does not require the same rigidity, since small beamsplitter movements do not impact the geometric accuracy of the image viewed through the beamsplitter. In alternative embodiments the frame can be composed of one or more support structures. The preferred source image display devices 103 a,b, 104 a-f, 105 a,b, 106 a,b, 108 a,b and 109 a,b of this invention are plasma flat screen displays. These devices provide the source imagery for all real and virtual images. It is the mosaic of alternating real and virtual images that create the continuous scene without gaps. The real images are images viewed on a monitor (or plasma screen) directly through the beamsplitter. Virtual images are images, produced by a monitor (or plasma screen) reflected from a beamsplitter, located so as to appear to be continuous from the adjacent real image(s). In some alternative embodiments CRT's, rear protection screens, LCD light valves, CRT projectors, laser projection devices, organic light emitting diodes and projectors and combinations of CRT's, and projectors can be substituted for the plasma flat screen image display devices without departing from concept of alternative embodiments of the invention. Nevertheless, the preferred image source for virtual images includes a flat panel plasma screen, in combination with a beamsplitter/optical combiner, shown in various configurations and in more detail in
The beamsplitter/combiner is preferably designed to be extremely rigid and stable in the reflective region. This rigidity is particularly desirable for training/simulation applications that include mounting of the display system on a motion base. The stability of the virtual image is dependent on both the mechanical stability of the display source and on the mechanical stability of the beamspliter/combiner. In order to achieve this desired stability, the beamsplitter/combiner of the present embodiment of the invention is mounted in the reflective region using a light weight honeycomb structure as a backing plate with precision spacers between the honeycomb structure and the beamsplitter/combiner to provide space for an adhesive while maintaining a nearly constant separation between the honeycomb structure and the beamsplitter/combiner. This mounting technique essentially reduces the optical transmission property of the beam splitter/combiner and the mounting structure to zero in the reflective region, thereby permitting the unwanted transmitted light to be fully absorbed into the mounting structure, rather than becoming scattered and reducing the contrast of the images provided in other display channels. This combination solution to the mechanical mounting and unwanted light absorption problem provides higher system contrast ratio than is generally achievable with prior display designs.
The preferred beamsplitter/combiner is formed into a custom shape that continues across the face of the direct view monitors, rather than simply terminating outside the reflective region. This beamsplitter/combiner design reduces the visibility of the edge of the beamsplitter/combiner and avoids a step down change in brightness from the direct view displays to the reflected monitors. The particular beamsplitter/combiner shape depends on the number of visual display channels, the desired field of view, the size of the display devices being used and the size and shape of the cockpit that the display system is mounted to. A variety of different beamsplitter/combiner combinations are shown in
In alternative embodiments, rather than edge blending the adjacent display channels are butt matched. Digital display panels, such as plasma or liquid crystal displays, provide an image free of drift because the pixels are physically built into the display device substrate and do not drift over time. This capability provides the opportunity to maximize the system field of view and resolution by not overlapping adjacent display devices. In this embodiment, the virtual image is placed with great precision to physically match the adjacent real image. Projection or CRT display devices cannot be placed with the desired precision because of the distortion generated by the projection optics or CRT tube. Precision edge matching is an important feature of the digital display panel embodiments of this invention.
The present preferred beamsplitter/combiner 404 of this invention is provided with a front surface optically reflective coating that is designed to have about 50% transmission and 50% reflective characteristics across the full frequency range of the visible spectrum. This coating, although not necessary in all embodiments and uses of the invention, maintains a smooth and continuous image in the blend region while the user/trainee physically moves his/her head within the design envelope. Moreover, the use of this coating maintains the consistency of brightness of the virtual reflected image and the direct view transmitted image regardless of which portion of the beamsplitter/combiner 404 each eye of the user/trainee is looking through at the region of the channel boundary. The back side surface of the beamsplitter is preferably coated with an anti-reflective coating to minimize any ghost images that might otherwise be reflected off of the back side of the beamsplitter.
The present preferred beamsplitter/combiner 605 of this invention also is provided with a coating that is designed to have about 50% transmission and 50% reflective characteristics across the full frequency range of the visible spectrum. This coating, although not necessary in all embodiments and uses of the invention, maintains a smooth and continuous image in the blend region while the user/trainee physically moves his/her head within the design envelope. Moreover, the use of this coating maintains the consistency of brightness of the virtual reflected image and the direct view transmitted image regardless of which portion of the beamsplitter/combiner 608 each eye of the user/trainee is looking through at the region of the channel boundary.
It is to be understood that the above-described embodiments and examples are merely illustrative of numerous and varied other embodiments and applications which may constitute applications of the principles of the invention. These above-described embodiments are provided to teach the present best mode of the invention only, and should not be interpreted to limit the scope of the claims. Such other embodiments, may use somewhat different steps and routines which may be readily devised by those skilled in the art without departing from the spirit or scope of this invention and it is our intent that they are deemed to be within the scope of this invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4003080||Jun 2, 1975||Jan 11, 1977||Laser Video, Inc.||Large screen video display systems and methods therefor|
|US4536061||Nov 29, 1982||Aug 20, 1985||Canon Kabushiki Kaisha||Display element|
|US4653862||Jan 13, 1986||Mar 31, 1987||Seiko Epson Corporation||Liquid crystal display device having color filters sized to prevent light leakage between pixels|
|US4791417||Mar 1, 1984||Dec 13, 1988||Tadeusz Bobak||Display device|
|US4799050||Oct 23, 1986||Jan 17, 1989||Litton Systems Canada Limited||Full color liquid crystal display|
|US4917465||Sep 1, 1989||Apr 17, 1990||In Focus Systems, Inc.||Color display system|
|US4931787||May 23, 1988||Jun 5, 1990||U.S. Philips Corporation||Active matrix addressed display system|
|US4966441||Jun 7, 1989||Oct 30, 1990||In Focus Systems, Inc.||Hybrid color display system|
|US5012274||Dec 23, 1988||Apr 30, 1991||Eugene Dolgoff||Active matrix LCD image projection system|
|US5019808||Nov 14, 1988||May 28, 1991||Litton Systems Canada Limited||Full color liquid crystal display|
|US5046827||Jul 20, 1989||Sep 10, 1991||Honeywell Inc.||Optical reconstruction filter for color mosaic displays|
|US5050965||Nov 22, 1989||Sep 24, 1991||In Focus Systems, Inc.||Color display using supertwisted nematic liquid crystal material|
|US5101279||Dec 11, 1990||Mar 31, 1992||Canon Kabushiki Kaisha||Liquid crystal display apparatus having lenticular elements oriented in relation to LC pixel aperture dimensions|
|US5124818||Aug 24, 1990||Jun 23, 1992||In Focus Systems, Inc.||LCD system having improved contrast ratio|
|US5130794||Mar 29, 1990||Jul 14, 1992||Ritchey Kurtis J||Panoramic display system|
|US5132839||Dec 24, 1990||Jul 21, 1992||Travis Adrian R L||Three dimensional display device|
|US5157503||Jul 16, 1991||Oct 20, 1992||Hughes Aircraft Company||Near-infinity image display system|
|US5241389||Jul 29, 1991||Aug 31, 1993||Intelligent Resources Integrated Systems, Inc.||Video display system providing for synchronization of multiple video data streams|
|US5300942||Feb 21, 1991||Apr 5, 1994||Projectavision Incorporated||High efficiency light valve projection system with decreased perception of spaces between pixels and/or hines|
|US5337068||Feb 1, 1993||Aug 9, 1994||David Sarnoff Research Center, Inc.||Field-sequential display system utilizing a backlit LCD pixel array and method for forming an image|
|US5371510 *||Nov 26, 1991||Dec 6, 1994||Nippondenso Co., Ltd.||Automotive information display apparatus|
|US5381187||Feb 13, 1992||Jan 10, 1995||Sharp Kabushiki Kaisha||Image display apparatus|
|US5386253||Apr 9, 1991||Jan 31, 1995||Rank Brimar Limited||Projection video display systems|
|US5436635||Jan 4, 1993||Jul 25, 1995||Matsushita Electric Industrial Co., Ltd.||Display device and display system using the same|
|US5491491 *||Oct 31, 1994||Feb 13, 1996||Motorola||Portable electronic equipment with binocular virtual display|
|US5504597||Jun 5, 1995||Apr 2, 1996||Xerox Corporation||Full color display with gradient index lens array disposed between phosphor emitters and liquid crystal display|
|US5504598||May 25, 1995||Apr 2, 1996||Xerox Corporation||Large screen full color display with plural adjacent display panels and enlarging graded index lens array|
|US5555035||Oct 3, 1994||Sep 10, 1996||Hughes Aircraft Company||Very high resolution light valve writing system based on tilting lower resolution flat panels|
|US5565742||Jul 14, 1992||Oct 15, 1996||Panocorp Display Systems||Electronic fluorescent display|
|US5583669||Apr 20, 1995||Dec 10, 1996||Matsushita Electric Industrial Co., Ltd.||Light valve apparatus, and projection display system and view-finder system employing said light valve apparatus|
|US5602679||Feb 6, 1995||Feb 11, 1997||Projectavision, Inc.||High efficiency light valve projection system|
|US5621284||Mar 10, 1995||Apr 15, 1997||Pixtech, Inc.||Electronic fluorescent display system|
|US5649032||Nov 14, 1994||Jul 15, 1997||David Sarnoff Research Center, Inc.||System for automatically aligning images to form a mosaic image|
|US5664158||Apr 25, 1995||Sep 2, 1997||The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration||Video display engineering and optimization system|
|US5668435||Jul 27, 1995||Sep 16, 1997||Hitachi, Ltd.||Color display system with color cathode ray tube having a high breakdown voltage|
|US5673091||Jan 20, 1994||Sep 30, 1997||Souriau Diagnostic Electronique||Liquid crystal display device w/plural housing assemblies edges overlap and maintain constant pitch between pixels|
|US5689283||Jul 14, 1995||Nov 18, 1997||Sony Corporation||Display for mosaic pattern of pixel information with optical pixel shift for high resolution|
|US5689315||Jul 14, 1993||Nov 18, 1997||Matsushita Electric Industrial Co., Ltd.||Light valve apparatus which is employed in a projection display system and in a view-finder system|
|US5701445||Sep 25, 1995||Dec 23, 1997||United Microelectronics Corp.||Generating multilayered pictures by image parameters|
|US5703621||Jul 12, 1996||Dec 30, 1997||Xerox Corporation||Universal display that presents all image types with high image fidelity|
|US5715022||Oct 7, 1994||Feb 3, 1998||Sharp Kabushiki Kaisha||Image display apparatus|
|US5721585||Aug 8, 1996||Feb 24, 1998||Keast; Jeffrey D.||Digital video panoramic image capture and display system|
|US5726719||Sep 29, 1995||Mar 10, 1998||Sharp Kabushiki Kaisha||Projection-type color display device|
|US5751390||Dec 12, 1996||May 12, 1998||Xerox Corporation||Enhanced off-axis viewing performance of liquid crystal display employing a fiberoptic faceplate in conjunction with dual negative retarders and a brightness enhancing film on the illumination source|
|US5760755||Aug 16, 1995||Jun 2, 1998||Engle; Craig D.||Electrostatic light valve system configurations|
|US5760850||Feb 9, 1996||Jun 2, 1998||Sharp Kabushiki Kaisha||Projection type image display apparatus|
|US5821911 *||Jan 12, 1995||Oct 13, 1998||Motorola||Miniature virtual image color display|
|US5831701||Jun 6, 1996||Nov 3, 1998||Hitachi, Ltd.||Liquid crystal display device with wide viewing angle characteristics comprising high resistivity black matrix|
|US5847784||Jul 29, 1997||Dec 8, 1998||Hughes Electronics Corporation||Self adjusting tiled projector using test pattern and sensor|
|US5900982||Nov 3, 1997||May 4, 1999||Projectavision, Inc.||High efficiency light valve projection system|
|US5969711||Mar 25, 1997||Oct 19, 1999||Bennethum Computer Systems||Method for creating an electronic document|
|US5969832||Nov 18, 1996||Oct 19, 1999||Sharp Kabushiki Kaisha||Projection image display device|
|US5971546||Jun 13, 1997||Oct 26, 1999||Lg Electronics Inc.||Image display device|
|US5986622||May 24, 1996||Nov 16, 1999||Lucent Technologies Inc.||Panel display of multiple display units for multiple signal sources|
|US5991444||Jun 25, 1997||Nov 23, 1999||Sarnoff Corporation||Method and apparatus for performing mosaic based image compression|
|US6040887||Oct 28, 1998||Mar 21, 2000||Hitachi, Ltd.||Liquid crystal display device with wide viewing angle characteristics comprising high resistivity black matrix|
|US6075504||Mar 19, 1993||Jun 13, 2000||Photonics Systems, Inc.||Flat panel display screens and systems|
|US6078371||Sep 29, 1999||Jun 20, 2000||Canon Kabushiki Kaisha||Liquid crystal device and liquid crystal display apparatus|
|US6128054||Sep 3, 1997||Oct 3, 2000||Central Research Laboratories Limited||Apparatus for displaying an image|
|US6157420||Mar 30, 1998||Dec 5, 2000||Sharp Kabushiki Kaisha||Projection-type image display apparatus|
|US6163349||Jun 6, 1997||Dec 19, 2000||Sharp Kabushiki Kaisha||Projection-type color liquid crystal display device having non overlapping pixel images|
|US6181302 *||Feb 7, 1997||Jan 30, 2001||C. Macgill Lynde||Marine navigation binoculars with virtual display superimposing real world image|
|US6195184||Jun 19, 1999||Feb 27, 2001||The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration||High-resolution large-field-of-view three-dimensional hologram display system and method thereof|
|US6252564||Aug 27, 1998||Jun 26, 2001||E Ink Corporation||Tiled displays|
|US6266037||Oct 18, 1994||Jul 24, 2001||Raf Electronics||Wafer based active matrix|
|US6266113||Jun 19, 1997||Jul 24, 2001||Seiko Instruments Inc.||Reflection type liquid crystal display device|
|US6330112||Apr 21, 1999||Dec 11, 2001||Sony Corporation||Optical modulator and image projection display apparatus|
|US6332684||Sep 17, 1999||Dec 25, 2001||Sharp Kabushiki Kaisha||Projection type color image display apparatus|
|US6346928||Oct 9, 1996||Feb 12, 2002||Celsiustech Electronics Ab||Image presentation method and arrangement|
|US6351335||Apr 7, 2000||Feb 26, 2002||New York University||Extremely high resolution foveated display|
|US6356332||Oct 15, 1998||Mar 12, 2002||Canon Kabushiki Kaisha||Matrix substrate and liquid crystal display device using the same in which the distance between the upper surface of the pixels being less than the distance between the lower surface of the pixels in contact with the substrate|
|US6393163||Dec 2, 1999||May 21, 2002||Sarnoff Corporation||Mosaic based image processing system|
|US20020077172 *||Dec 11, 2001||Jun 20, 2002||Konami Corporation||Virtual image/real image superimposing and displaying apparatus, and slot machine|
|USRE36654||Aug 5, 1996||Apr 11, 2000||In Focus Systems, Inc.||Stacked LCD color display|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8194193 *||Feb 8, 2008||Jun 5, 2012||The Boeing Company||Method and apparatus for a wide field of view display|
|US8274013||Mar 8, 2010||Sep 25, 2012||Lincoln Global, Inc.||System for tracking and analyzing welding activity|
|US8569646||May 7, 2010||Oct 29, 2013||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US8587497 *||May 9, 2012||Nov 19, 2013||The Boeing Company||Method and apparatus for a wide field of view display|
|US8657605||Apr 7, 2011||Feb 25, 2014||Lincoln Global, Inc.||Virtual testing and inspection of a virtual weldment|
|US8733028 *||Jan 8, 2010||May 27, 2014||Mechdyne Corporation||Display transformation assembly for a visualization system|
|US8747116||Jul 10, 2009||Jun 10, 2014||Lincoln Global, Inc.||System and method providing arc welding training in a real-time simulated virtual reality environment using real-time weld puddle feedback|
|US8834168||Mar 11, 2013||Sep 16, 2014||Lincoln Global, Inc.||System and method providing combined virtual reality arc welding and three-dimensional (3D) viewing|
|US8851896||Mar 11, 2013||Oct 7, 2014||Lincoln Global, Inc.||Virtual reality GTAW and pipe welding simulator and setup|
|US8884177||Apr 23, 2012||Nov 11, 2014||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US8911237||Jul 10, 2012||Dec 16, 2014||Lincoln Global, Inc.||Virtual reality pipe welding simulator and setup|
|US8915740||Jul 10, 2009||Dec 23, 2014||Lincoln Global, Inc.||Virtual reality pipe welding simulator|
|US8987628||Oct 3, 2013||Mar 24, 2015||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US9011154||Feb 2, 2012||Apr 21, 2015||Lincoln Global, Inc.||Virtual welding system|
|US9012802||Oct 3, 2013||Apr 21, 2015||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US9050678||Oct 3, 2013||Jun 9, 2015||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US9050679||Oct 3, 2013||Jun 9, 2015||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US9089921||Oct 3, 2013||Jul 28, 2015||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US9092188 *||Apr 18, 2014||Jul 28, 2015||Mechdyne Corporation||Display transformation assembly for a visualization system|
|US9110358||Jun 4, 2013||Aug 18, 2015||The Boeing Company||Method for creating and a system for using a constant vertical resolution toroidal display|
|US9196169||Mar 11, 2013||Nov 24, 2015||Lincoln Global, Inc.||Importing and analyzing external data using a virtual reality welding system|
|US9221117||Jul 6, 2012||Dec 29, 2015||Lincoln Global, Inc.||System for characterizing manual welding operations|
|US9230449||Dec 13, 2010||Jan 5, 2016||Lincoln Global, Inc.||Welding training system|
|US9269279||Jul 28, 2014||Feb 23, 2016||Lincoln Global, Inc.||Welding training system|
|US9280913||Mar 11, 2013||Mar 8, 2016||Lincoln Global, Inc.||Systems and methods providing enhanced education and training in a virtual reality environment|
|US9293056||Aug 7, 2015||Mar 22, 2016||Lincoln Global, Inc.||Importing and analyzing external data using a virtual reality welding system|
|US9293057||Aug 7, 2015||Mar 22, 2016||Lincoln Global, Inc.||Importing and analyzing external data using a virtual reality welding system|
|US9318026||Mar 11, 2013||Apr 19, 2016||Lincoln Global, Inc.||Systems and methods providing an enhanced user experience in a real-time simulated virtual reality welding environment|
|US9330575||Mar 14, 2013||May 3, 2016||Lincoln Global, Inc.||Tablet-based welding simulator|
|US9336686||Mar 25, 2014||May 10, 2016||Lincoln Global, Inc.||Tablet-based welding simulator|
|US9468988||Nov 10, 2014||Oct 18, 2016||Lincoln Global, Inc.||Systems, methods, and apparatuses for monitoring weld quality|
|US9470967||May 14, 2014||Oct 18, 2016||The Boeing Company||Motion-based system using a constant vertical resolution toroidal display|
|US9483959||Jul 17, 2009||Nov 1, 2016||Lincoln Global, Inc.||Welding simulator|
|US20090201430 *||Feb 8, 2008||Aug 13, 2009||Streid Harold R||Method and apparatus for a wide field of view display|
|US20100224610 *||Mar 8, 2010||Sep 9, 2010||Lincoln Global, Inc.||System for tracking and analyzing welding activity|
|US20110168653 *||Jan 8, 2010||Jul 14, 2011||Chris Garrett||Display transformation assembly for a visualization system|
|US20120218170 *||May 9, 2012||Aug 30, 2012||The Boeing Company||Method and Apparatus for a Wide Field of View Display|
|US20140226273 *||Apr 18, 2014||Aug 14, 2014||Mechdyne Corporation||Display transformation assembly for a visualization system|
|USRE45398||Feb 11, 2014||Mar 3, 2015||Lincoln Global, Inc.||System for tracking and analyzing welding activity|
|U.S. Classification||345/7, 345/32|
|Cooperative Classification||G02B27/143, G02B27/1073, G02B27/1066, G02B27/144, G09B9/30|
|European Classification||G02B27/14F, G02B27/10M, G02B27/14H, G02B27/10K, G09B9/30|
|Dec 7, 2003||AS||Assignment|
Owner name: ADVANCED SIMULATION DISPLAYS CO., UTAH
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MUFFLER, RONALD J.;REEL/FRAME:014777/0847
Effective date: 20031112
|Apr 2, 2012||REMI||Maintenance fee reminder mailed|
|Aug 19, 2012||LAPS||Lapse for failure to pay maintenance fees|
|Oct 9, 2012||FP||Expired due to failure to pay maintenance fee|
Effective date: 20120819